Redshirt98 shows a working compass for his Arduino Airsoft Project which is to build an MA5C Halo 3 Assault Rifle... "Finally was able to replicate the compass for the MA5C Halo 3 Assault Rifle. Powered by an Arduino Nano and an LSM303 three-axis compass sensor and displayed on a tiny OLED screen. Tried to make it exactly like the game version. It displays eight directions, always pointing back toward North.